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Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 30, 2013
Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | Components of accumulated other comprehensive loss were as follows ($ in millions):
| September 30, 2013 |  | December 31, 2012
Accumulated pension and OPEB liability adjustments, net of income tax of $22.5 million and $23.3 million at September 30, 2013 and December 31, 2012, respectively | $ | (40.8 | ) |  | $ | (43.2 | )
Accumulated unrealized loss on derivative instruments, net of income tax benefit of $0.3 million and $1.5 million at September 30, 2013 and December 31, 2012, respectively | (6.2 | ) |  | (1.4 | )
Accumulated unrealized foreign currency translation adjustments | 28.1 |  |  | 29.2 |
Accumulated other comprehensive loss | $ | (18.9 | ) |  | $ | (15.4 | )
Schedule of Comprehensive Income (Loss) | Changes in the components of accumulated other comprehensive loss were as follows ($ in millions):
| Three Months Ended
| September 30, 2013 |  | September 30, 2012
| Pre-tax |  | Tax |  | Net of Tax |  | Pre-tax |  | Tax |  | Net of Tax
Pension and OPEB liability adjustments | $ | (0.1 | ) |  | $ | 0.4 |  |  | $ | 0.3 |  |  | $ | 1.5 |  |  | $ | (0.7 | ) |  | $ | 0.8 |
Unrealized loss on derivative instruments | 0.8 |  |  | (0.4 | ) |  | 0.4 |  |  | (0.2 | ) |  | 0.1 |  |  | (0.1 | )
Unrealized foreign currency translation adjustments | 16.0 |  |  | — |  |  | 16.0 |  |  | 12.7 |  |  | — |  |  | 12.7 |
Total | $ | 16.7 |  |  | $ | — |  |  | $ | 16.7 |  |  | $ | 14.0 |  |  | $ | (0.6 | ) |  | $ | 13.4 |
| Nine Months Ended
| September 30, 2013 |  | September 30, 2012
| Pre-tax |  | Tax |  | Net of Tax |  | Pre-tax |  | Tax |  | Net of Tax
Pension and OPEB liability adjustments | $ | 3.2 |  |  | $ | (0.8 | ) |  | $ | 2.4 |  |  | $ | 2.6 |  |  | $ | (1.0 | ) |  | $ | 1.6 |
Unrealized loss on derivative instruments | (3.6 | ) |  | (1.2 | ) |  | (4.8 | ) |  | (3.2 | ) |  | 1.1 |  |  | (2.1 | )
Unrealized foreign currency translation adjustments | (1.1 | ) |  | — |  |  | (1.1 | ) |  | 1.7 |  |  | — |  |  | 1.7 |
Total | $ | (1.5 | ) |  | $ | (2.0 | ) |  | $ | (3.5 | ) |  | $ | 1.1 |  |  | $ | 0.1 |  |  | $ | 1.2 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e526-108580 + Details
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